Setting up Docker-CE on Ubuntu 16.04 Xenial

This post assume that you know what docker is, if not please check the link here to know more about docker. Currently docker has two variants Docker-CE (Community Edition) and Docker-EE (Enterprise edition). In this post I am installing Docker-CE on to my Ubuntu 16.04 Xenial Desktop. We test the installation by simply running a hello world docker.

Step-1: Remove previous versions of docker if any

We have to remove previous versions of docker if they are already installed. Previous versions are called as “docker” and “docker-engine”

$ sudo apt-get remove docker docker-engine

Step-2: Allow apt to use repositories over https

Install the packages required to allow “apt” to use a repository over https.

$ sudo apt-get install
    apt-transport-https \
    ca-certificates \
    curl \
    software-properties-common

Step-3: Add Docker’s official GPG key

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

Step-4: Setup stable repository

$ sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
 $(lsb_release -cs)

Above command returns the name of your Ubuntu distribution such as “Xenial”

Step-5: Install Docker

Run the following commands to install docker:

$ sudo apt-get update
$ sudo apt-get install docker-ce

Step-6: Test docker installation

It’s time to test whether docker was successfully installed on not. We run the following command to test it.

$ sudo docker run hello-world

If the installation is successful, you will see the below log on your terminal.

docker_install

That’s all for now. We see more docker posts in future.

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